References of "2007"
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See detailImpact of implant geometry and loading on early bone formation, Clinical Oral Implants Research
Vandamme, Katleen; Naert, Ignace; Geris, Liesbet ULg et al

in Clinical Oral Implants Research (2007), 18(5), 71-72

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See detailHybridization And Sexual Reproduction In The Invasive Alien Fallopia (Polygonaceae) Complex In Belgium
Tiebre, Ms.; Vanderhoeven, Sonia ULg; Saad, Layla ULg et al

in Annals of Botany (2007), 99(1), 193-203

† Background and Aims The knotweed complex, Fallopia spp. (Polygonaceae), belongs to the most troublesome invasive species in Europe and North America. Vegetative regeneration is widely recognized as the ... [more ▼]

† Background and Aims The knotweed complex, Fallopia spp. (Polygonaceae), belongs to the most troublesome invasive species in Europe and North America. Vegetative regeneration is widely recognized as the main mode of reproduction in the adventive regions. However, the contribution of sexual reproduction to the success of these invasive species has only been detailed for the British Isles. An examination was made as to how hybridization may influence the sexual reproduction of the complex in Belgium and to determine how it may contribute to the dispersal of the species. † Methods Studies were made of floral biology, reproductive success, seed rain, seed bank, germination capacity, seedling survival and dispersal capacity in order to characterize the reproductive biology of the species. Moreover, chromosome counts and flow cytometry were used to assess the hybrid status of seedlings produced by sexual reproduction. † Key Results In the area investigated, extensive sexual reproduction by hybridization within the complex, including one horticultural species, was demonstrated. A small percentage of seeds may be dispersed outside the maternal clone (.16 m) allowing the formation of genetically differentiated individuals. Seed germination was possible even after a winter cold period. †Conclusions The extensive sexual reproduction by hybridization could further contribute to the dramatic invasive success of knotweeds in Belgium and should not be underestimated when considering control and management measures. [less ▲]

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See detailHow do Foreigners and Immigrants in Belgium View the Legal System ?
Martiniello, Marco ULg; Foblets, Marie-Claire; Parmentier, Stephan et al

in Journal of Immigration, Asylum and Nationality Law (2007), 21(4), 263-283

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See detailTumeur de Klatskin ?
Leclercq, Ph; MEURISSE, Nicolas ULg

in Journal de Chirurgie (2007), 144

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See detailInfluence of purified dietary fibre on bacterial protein synthesis in the large intestine of pigs, as measured by the gas production technique.
Bindelle, Jérôme ULg; Buldgen, André; Michaux, David et al

in Livestock Science (2007), 109

Microbial fermentation of non-digestible carbohydrates in the pig's large intestine induces a shift of N excretion from urea in urine to bacterial protein in faeces. Experiments were carried out to ... [more ▼]

Microbial fermentation of non-digestible carbohydrates in the pig's large intestine induces a shift of N excretion from urea in urine to bacterial protein in faeces. Experiments were carried out to measure the mineral N incorporation by the pig intestinal microflora using 5 purified carbohydrates in a gas-test: starch (S), cellulose (C), inulin (I), pectin (P) and xylan (X). Fermentation kinetics was modelled. N source in the buffer solution was replaced by 15N labelled NH4Cl. The bacterial N fixation was determined at mid-fermentation, measuring 15N incorporation into the solid phase of the buffer. The bacterial N fixation was higher (Pb0.001) with I and S (19.9 and 18.1 mg N/g incubated DM), compared to P, C and X (8.7, 5.9 and 5.5 respectively). Inulin and S were fermented also more rapidly, even if I (0.081 h−1) and C (0.074 h−1) showed lower half time fractional rate of degradation than S (0.153 h−1), P (0.133 h−1) and X (0.104 h−1). The insoluble dietary fibre content of the substrates was negatively correlated to bacterial N fixation (r=−0.957, P=0.011). The high crude protein content of P (32.5 mg g−1DM) might explain the lower impact of this substrate on bacterial N fixation, despite its rapid fermentation. Beside the proportion of insoluble fibre, the N content and the rate of fermentation seem to be the major factors influencing bacterial protein synthesis. Further studies including ingredients with variable content of indigestible protein and mean retention time in the pig's intestines are necessary. [less ▲]

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See detailEffect of pig faecal donor and of pig diet composition on in vitro fermentation of sugar beet pulp.
Bindelle, Jérôme ULg; Buldgen, André; Lambotte, Damien et al

in Animal Feed Science & Technology (2007), 132

Two experiments were undertaken to investigate the influence of (1) pig bodyweight and (2) dietary fibre content of the diet on the in vitro gas production of sugar beet pulp fibre using faecal inoculum ... [more ▼]

Two experiments were undertaken to investigate the influence of (1) pig bodyweight and (2) dietary fibre content of the diet on the in vitro gas production of sugar beet pulp fibre using faecal inoculum. In the first experiment, inocula prepared from young pigs (Y; 16–50 kg), growing pigs (G; 62–93 kg) and sows (S; 216–240 kg) were compared. Sugar beet pulp, hydrolysed in vitro with pepsin and then pancreatin, was used as the fermentation substrate. The cumulated gas productions over 144 h were modelled and the kinetics parameters compared. Lag times (Y: 4.6 h; G: 6.4 h; S: 9.2 h) and halftimes to asymptote (Y: 14.7 h; G: 15.9 h; S: 20.8 h) increased with pig bodyweight (P<0.001) and the fractional degradation rates of the substrate differed between the pig categories (Y: 0.110 h−1; G: 0.115 h−1; S: 0.100 h−1; P<0.001). The final gas productionwas not affected (P=0.10) by the inoculum source. In the second experiment hydrolysed sugar beet pulp was fermented with four inocula prepared from pigs fed diets differing in their total and soluble dietary fibre contents, i.e. low fibre diet rich in soluble fibre (LOW-S) or in insoluble fibre (LOW-I) or high fibre diet rich in soluble fibre (HIGHS) or in insoluble fibre (HIGH-I). The total and the soluble dietary fibres influenced the kinetics of gas production. The presence of soluble fibres decreased the lag times, whatever the total dietaryfibre content (2.7 h for LOW-S versus 3.5 h for LOW-I, 4.0 h for HIGH-S versus 4.4 h for HIGH-I; P<0.001). The half-times to asymptote were higher with the low fibre diets (P<0.001) and, for similar total dietary fibre contents, they were lower when the proportion of soluble fibres increased (LOW-S: 9.9 h; LOW-I: 11.4 h; HIGH-S: 8.9 h; HIGH-I: 10.1 h; P<0.001). The fractional degradation rates of the substrate were the highest with the fibre-rich diet containing a high proportion of soluble fibres (0.158 h−1; P<0.001). In conclusion, the bodyweight of the faeces donors and the dietary fibre composition of the pig diet influence the in vitro fermentation kinetics of hydrolysed sugar beet pulp, but not the final gas production. [less ▲]

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See detailA perturbation method for computing field distortions due to conductive regions with h-conform magnetodynamic finite element formulations
Dular, Patrick ULg; V Sabariego, Ruth ULg

in IEEE Transactions on Magnetics (2007), 43(4), 1293-1296

A method for solving eddy current problems in two separate steps is developed for global-local analyses with h-conform finite element formulations. An unperturbed problem is first solved in a global mesh ... [more ▼]

A method for solving eddy current problems in two separate steps is developed for global-local analyses with h-conform finite element formulations. An unperturbed problem is first solved in a global mesh excluding additional conductive regions. Its solution gives the sources for a sequence of other problems, perturbed by adding conductive regions. Each problem only requires a new adapted mesh of a local region. The way the local problems and their sources are defined leads to a significant speedup of parameterized analyses, e.g., in optimization and sensitivity analyses. [less ▲]

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See detailMicro and macro investigation on the hardening of a titanium alloy
Lelotte, Thomas; Rossi, Barbara ULg; Habraken, Anne ULg

in 11th World conference on titanium: Ti 2007, Kyoto 3-7 June 2007 (2007)

This paper presents the experimental and numerical tests made on the Titanium based alloy Ti6A14V to identify its yield locus and the hardening behaviour. A bi-axial experimental equipment has been used ... [more ▼]

This paper presents the experimental and numerical tests made on the Titanium based alloy Ti6A14V to identify its yield locus and the hardening behaviour. A bi-axial experimental equipment has been used to perform cyclic shear tests, simple shear tests and successive simple shear tests and plane-strain tests. Coupled with classical tensile tests, these tests enable to identify the yield locus and the hardening model. Teodosiu and Hu’s hardening law and isotropic Swift type hardening and kinematic Armstrong Frederick hardening models have been investigated. [less ▲]

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See detailInvestigation on the equivalent viscous damping in direct displacement-based design
Degée, Hervé ULg; Bento, R.; Massena, B.

in Proceedings of the Congress SISMICA - 7º CONGRESSO DE SISMOLOGIA E ENGENHARIA SÍSMICA (2007)

It is generally stated that an accurate evaluation of the equivalent viscous damping is a crucial step in the Direct Displacement-Based Design (DDBD) methodology. In such a context, the main objective of ... [more ▼]

It is generally stated that an accurate evaluation of the equivalent viscous damping is a crucial step in the Direct Displacement-Based Design (DDBD) methodology. In such a context, the main objective of the present contribution is to assess and compare different existing equations aiming at evaluating the equivalent damping and to provide information of the practical consequences of choosing one or another of these equations in the design process. [less ▲]

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See detailActualités dans le traitement des pseudarthroses aseptiques
Van Cauwenberge, Henry ULg; Hauzeur, Jean-Philippe ULg; Gillet, Philippe ULg

in Revue Médicale de Liège (2007), 62(5-6), 344-351

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See detailPrécision de l'estimation de l'âge des chevaux par l'examen des dents: résultats d'une étude sur des juments de Trait belge
Nicks, Baudouin ULg; Delfontaine, B.; Claveau, C. et al

in Annales de Médecine Vétérinaire (2007), 151(1), 6-14

The aim of this study was to assess the accuracy of judging age from teeth, with standard aging guides, of mares from 2 to 20 years old registered in the Belgian draft horse stud-book. The replacement of ... [more ▼]

The aim of this study was to assess the accuracy of judging age from teeth, with standard aging guides, of mares from 2 to 20 years old registered in the Belgian draft horse stud-book. The replacement of the deciduous incisors by permanent teeth occurred when expected as the disappearance of the infundibulum on the permanent lower intermediate incisors. The disappearance of the infundibulum was however observed until 16 months earlier than expected on the central incisors and until 18 months later on the corner incisors with 64 % and 50 % of the concerned mares respectively. The modifications of the shape of the occlusal tables from oval to round occurred from 1 to 4 years earlier than expected. The risk to attribute an older age than the true age during the so called round period is lower when taking into account the disappearance of the cup cement leaving only an enamel spot on the occlusal table surface. The modifications of the shape of the incisor tables from round to triangular and to biangular was also observed earlier than expected but only with the central and intermediate incisors, not with the corner incisors. The measurement on photographs of the profile angle of the corner incisors confirmed that this angle decreases with age from about 134 degrees at about 5 years to about 72 degrees at 20 years. Statistical analyses of the differences between real ages and those estimated on pictures by a college of three experts, show that ageing horses from their dentition is more accurate for animals of 8 years old or less, than for older ones. For those animals, the overestimation was about 10 % of the real age. [less ▲]

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See detailSound production mechanism in the clownfish Amphiprion clarkii (Amphiprioninae, Pomacentridae)
Colleye, Orphal ULg; Herrel, Anthony; Mauguit, Quentin et al

Poster (2007)

Clownfishes live in social group within sea anemones. They are prolific “singers” that produce a wide variety of sounds, described as “pops” and “chirps”, involved in both reproductive and agonistic ... [more ▼]

Clownfishes live in social group within sea anemones. They are prolific “singers” that produce a wide variety of sounds, described as “pops” and “chirps”, involved in both reproductive and agonistic interactions. Although clownfish sounds were recorded since 1930, the mechanism of sound production has remained unresolved. The sounds used to describe the sonic mechanism were directed towards hetero- and conspecifics that approach their sea anemone host. Sound recordings were synchronized using a high speed video (500 fps) coupled or not with an X-ray system. These systems allowed to quantify the movements of external and internal bones during sound production. Sounds were typically accompanied by rapid (< 30 ms) head movements such as elevation of the skull, lowering of the hyoid bar and the anterior part of the branchial basket, retraction of the pectoral girdle, and finally closing of the mouth. Synchronization of sound pulses with X-ray images indicates that sound is produced when the hyoid apparatus is completely lowered and the mouth closed by a previously unknown mechanism. Dissections of freshly dead specimens reveal an unusual ligament responsible for the rapid mouth closing. This ligament joins the hyoid bar to the internal part of the mandible. Acting as a cord, it forces the mandible to turn around its articulation during the lowering of the anterior part of the branchial basket, forcing the mouth to close. Sounds result from the collision of the jaw teeth, transferring energy to the jaws that are presumably the sound radiator. [less ▲]

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See detailNonlinear regression with censored data
Heuchenne, Cédric ULg; Van Keilegom, Ingrid

in Technometrics (2007), 49(1), 34-44

Suppose that the random vector (X, Y) satisfies the regression model Y = m(X) + sigma(X)epsilon, where m(.) = E(Y vertical bar.) belongs to some parametric class (m(theta)(.):theta is an element of Theta ... [more ▼]

Suppose that the random vector (X, Y) satisfies the regression model Y = m(X) + sigma(X)epsilon, where m(.) = E(Y vertical bar.) belongs to some parametric class (m(theta)(.):theta is an element of Theta) of regression functions, sigma(2)(.) = var(Y vertical bar.) is unknown, and e is independent of X. The response Y is subject to random right censoring, and the covariate X is completely observed. A new estimation procedure for the true, unknown parameter vector theta(0) is proposed that extends the classical least squares procedure for nonlinear regression to the case where the response is subject to censoring. The consistency and asymptotic normality of the proposed estimator are established. The estimator is compared through simulations with an estimator proposed by Stute in 1999, and both methods are also applied to a fatigue life dataset of strain-controlled materials. [less ▲]

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See detailGide-Simenon. Une correspondance improbable
Denis, Benoît ULg

in Guyaux, André (Ed.) Échanges épistolaires franco-belges (2007)

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See detailcompte rendu de Livre des miracles de saint Gilles
George, Philippe ULg

in Revue d'Histoire Ecclésiastique (2007)

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See detailContribution à la détermination d’impacts économiques de la fertilisation d’un ferralsol par l’extrait aqueux de cendres de Cynodon dactylon à Kisangani, R.D.Congo
Bolakonga Ilye, Antoine Bily ULg; Moango Manga, Adrien; Natdanga Lele et al

in Annales de l’Institut Facultaire des Sciences Agronomiques de Yangambi (2007), 1

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See detailAmortissement visqueux à utiliser pour un dimensionnement direct basé sur les déplacements
Degée, Hervé ULg; Bento, R.; Massena, B.

in Actes du 7ème colloque de l'AFPS (2007)

It is generally stated that an accurate evaluation of the equivalent viscous damping is a crucial step in the Direct Displacement-Based Design (DDBD) methodology. In such a context, the main objective of ... [more ▼]

It is generally stated that an accurate evaluation of the equivalent viscous damping is a crucial step in the Direct Displacement-Based Design (DDBD) methodology. In such a context, the main objective of the present contribution is to assess and compare different existing equations aiming at evaluating the equivalent damping and to provide information of the practical consequences of choosing one or another of these equations in the design process. [less ▲]

Detailed reference viewed: 97 (4 ULg)